They’ll plug the car into a diagnostic laptop and check the log for rpm. That technology has to be 15 years old by now. BMW used to use it for warranty claims, I recall reading where there have more than few claims rejected for excessive rpm... oddly enough it was weighted heavily on the M3’s being the most excessively abused.
My concern is what percents of those who live there are criminals and considered worthless trash that have no character or respect for others. Society would be better off if the trash was just disposed of as trash. Most Americans are decent but the trash does start to make things rotten. DAs etc that refuse to prosecute makes everything rotten.